Rotating means for rock-drills.



1). s. WAUGH. ROTATING MEANS FOR ROCK DRILLS. APPLICATION FILED JUI Y 7, 1913.

Patented Jan. 13, 19m

D. S. WAUGH. ROTATING MEANS FOR ROCK DRILLS.

APPLIOATION FILED JULY 7, 1913.

Patented Jan. 13, 1914.-

- :2 SHEETS-SHEET 2.

8 1 1 um fol, Waxy/z Z, 6 J I UNITED STATES PA'rnn'r ounro.

DANIEL S. VTAUGH, OF DENVER, COLORADO, ASSIGNOB TO DENVER ROCK DRILL MTANUFACTURING COMPANY, OF DENVER, COLORADO, A CORPORATION OF DELA- WARE.

ROTATING MEANS FOR ROCK-DRILLS.

Application filed July 7, 1913.

Specification of Letters Patent.

Patented Jan. 13, finial.

Serial No. 777,692.

To all whom it may concern:

Be it known that I, DANIEL S. lVArGH, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado have invented new and useful lm-' u I provements in Rotating Means for Rockfacture, but is effective in operation.

An embodiment of the invention is illustrated in the accompanying drawings, wherein Figure 1 is a longitudinal sectional view through a portion of a motor equipped with the rotating means. Figs. 2 and 3 are respectively cross sectional views on the lines 22 and 3-3 of Fig. 1. Fig. 4 is a detail perspective view of the piston and tappet. Fig. 5 is a similar view of the feather element or ring. Fig. 6 is a detail sectional view illustrating one of the spring plungers for insuring proper coaction between the ratchet or clutch elements. Fig. 7 is a detail perspective view of the clutch ring and the rear end of the chuck. I

Similar reference numerals designate correspondingparts in all the figures of the drawings. 7

In the embodiment illustrated, a cylinder member 8 is employed having a front head 9 and containing a reciprocator-y pistonlO of the hammer type. The piston is reciprocated by air or other fluid under pressure, which may be controlled and distributed by any well known means. Secured to the cyl-. inder in advance of the head 9, is a feather element or ring 11, on the front end of which is mounted a chuck barrel or casing 12. The piston 10 is of the hammer type, and has a reduced stem 13 passing through the head 9,

, the ring 11, and into the barrel or casing 12.

with relation; to thecylinder 8, and is provided with inwardly extending feathers 16 that are enga ed in the spiral grooves 15. It will thus be evident that the piston 10 upon its reciprocation is given an oscillatorv movement on its longitudinal axis. U

A clutch member or ring 17 surrounds the stem 13 of the piston, and is provided with rearward extensions 18 that are located within the ring 11 and have inwardly extending feathers 19 engaged in the longitudinal grooves 14 of the stem 13. This clutch member 17, while it has a slight longitudinal play, is thus slidably connected to the piston 10 and is caused to oscillate therewith.

Fixed against longitudinal movement in the barrel or casing 12, is a chuckiri the form of a sleeve 20 that is freely rotatable, and is provided with suitable means in the form of a bushing 21 for receiving the inner en d of a tool 22, the tool and the socket. re ceiving the same, preferably being angular in cross section, so that the tool must rotate with the chuck while it has free longitudinal play therein. Arranged within this chuck,

front end of the piston stem 13 and transmits the blow to the tool 22 in a manner well understood by thoseskilledin the art.

The rear end face of thechuck 20 is provided with a series of cliitoh orratchet teeth 24, and the front face of the chuck member or ring 17 is provided with coacting clutch or ratchet teeth 25. These teeth are arranged to interlock, as indicated in Figs. 1 and 6, but the ring 17, as already explained, has a limited longitudinal play, which play is sufficient to permit the teeth 25 to pass over the teeth 24 upon the oscillatory movement of the ring 17 in one direction. lhe said ring is, however, urged forwardly to secure the interengagement ofv the teeth, by suitable means, in the present embodiment, in the form of plungers 26 that bear againstthe rear face of the ring 17, being slidably mounted in sockets 27 formed in the front end of the feather ring 11. These plungcrs are forced outwardly by coiled springs 28 located in the sockets behind them.

Briefiy described, the operation of the structure is as tion of the piston, said piston as already explained, will be given an oscillatory movement by the engagement of the feathers 111 in the spiral grooves and the clutch ring l 17 will'be oscillated with the piston. During is a suitable tappet 23 that is struck by the 1 follows: Upon the reciproca- Mid the movement of. the piston in one direction, the ring 17 will move in a direction to cause its teeth 25 to ride over the teeth 24:, the plungers 26 being. forced rearwardlyinto their sockets :27. \Vhen, however, the movement of thering 17- in the opposite Cll1'C- i tion takes place,'then the lungers 36 will force the ring 17' forwar ly, causing theteeth to interlock with-the teeth 24, and effecting a slight turning movement of the chuck, this movement being, of course, transmitted, to thetool 22. The repeated oscillation of the piston and the. clutch ring will thus impart a chuck. g From the foregoing, it is thought that the construction, operation, and many advantages of the herein described invention will be apparent to those skilledin the art, and it will be" understood that various changes in the size, shape, proportion, and minor details of construction, may be resorted to without departing from the spirit or sacrificing any'of the-advantages of the invention.

Having thus fully described my invention,

-.what I claim as new, and desire to secure by Letters Patent, is

'1 In a motor, the combination with a cylinder member and a piston having, a back and forth movement therein, of means for causing an oscillatory movement of the pis-' to'n, a rotatable chuck, and means actuated by the piston on its oscillatory movement for effecting a rotary movement of'the chuck.

Q. In a motor, the combination with a cylinder member and a .reciprocatory piston I operating therein, of means fixed with relation to; the cylinder member to effect an OS- 'cillati'on of the piston on its reciprocation, a rotary chuck, and means actuated by the iston on its oscillatory movement for efecting a stepeby-step rotary movement of the chuck.

3. In a motor, the combination with a cylindermember and a reciprocatory hammer piston operatlng therein, of means fixed with relation to the cylinder member and backand forth movement, a rotatable chuck having a rear clutch face, aclutch member having a front clutch face coacting with the rear clutch face of thechuck and also having a feathered engagement with the piston, a fixedmember having a feathered engagementwith the piston, and spring means 1nterposed between the fixed member and clutch -member for urging the latter forwardly.

ste'p-by-ste'p rotation to the" 5. In a mo'tor, the combination with a cylinder member, of a piston therein having aback and forth movement, a fixed member having a feathered engagement witlrthe piston to determine its patlr-of movementfa rotatable chuck having a rear clutch fade, and a clutch member having a front clutch face coacting with the rear clutch face of the-chuck and also having a feathered engagement with the piston within the fixed member and alongside said feathered engagement of said fixed member with the piston.

6. In a motor, the combination with a cylinder member, of a piston therein having a back and forth -movement, a fixed member having spaced feathered engagements witl: the piston to determine its path of movement, a rotatable chuck having a rear clutch face, a clutch member having a front clutch face coacting with the rear clutch face of the chuck and also having rearwardly extending portions that are located wit-hin the fixed member between the latters feathered engagements with the piston, said portions having featheredengagementswith the pis .ton, and spring means interposed'between the fixed member and the clutch member for urging the latter forwardly.

' 7-. In a motor, the combination with a cylinder member, bf an oscillatory piston operating therein, an oscillatory clutch ring surrounding the piston, said ring furthermore having a limited longitudinal play, spring mechanism forurging the ring forwardly, said rmg havmg a ratchet front face, a rotatable chuck having a rear ratchet face that coacts with the front face of'the ring, and means for effecting an oscillation of the ring by the piston on the latters oscillation and thereby effecting a step-by-step rotation of" the chuck.

8. In a motor, the combination with a cylinder member, of areciprocatory piston operating therein, means for effecting an oscilla: tion of the piston, an oscillatory clutch ring surrounding the piston and feathered thereto so as to oscillate therewith, said clutch rmg having a ratchet front face, a rotatable chuck having a rear ratchet face coact-- ing with the front face of the ring, and means for yieldingly urging the, ring longi tudinally toward the chuck. i

9. In a motor, the combination with a cylinder member, ofa reciprocatory piston operating, therein, a fixed feather element carried by the cylinder member and slidably engaged by the piston, a clutch ring surrounding a portion of the piston and having a front ratchet face, a. rotatable chuck having a rear'ratchet face engagedby' the front ratchetof the ring, a connection between the iston and ring for effecting an oscillation o the latter, and spring means interposed between the ring and the fixed.

- feather element for urging the ring forward ble chuck, and 'face ratchet or clutch teeth to maintain theratchetfaces in coacting relocated on the rear end of the chuck and' lation. v the front end of the clutch ring, said teeth 10. In a motor, the oombination-"Withacyldetachably inter-engaging. inder member, of a hammer piston having In testimony whereof'l have hereunto set longitudinal and spiral grooves, a ring fixed my hand in presence of two subscribing'wib t0 the cylinder and having feathers enga nesses. ing in the spiral grooves, a clutch ring surv v DANIEL S. WAUGH- rounding the piston and having feathers W1tnesses:

10 engaged in thelongitudinal grooves,aspring W. H. LEONARD,

interposed between the two rings, a rotata- D. B. TURNER. 

